I love Syncthing to bits but I wouldn't say it was comparable to Dropbox in terms of UX and flexibility for e.g. sharing with others or reliability (it gets stuck on syncing files way more often than Dropbox for me.)

How do I create a share link to deliver a commission to someone with SyncThing? Cloud storage has evolved beyond just syncing stuff. SyncThing is great for keeping two or more up to date copies on different computers, but it doesn't do most of the things people do with Dropbox et al.